<!DOCTYPE html>
<html lang="zh">
<head>
    <meta charset="UTF-8">
    <title>音视频</title>
</head>
<body>
    <!-- <audio src="./source/audio.mp3" controls autoplay loop></audio> -->
    <audio controls>
        <source src="./source/audio.mp3">
        <source src="./source/audio.ogg"> 
        <embed src="./source/audio.mp3" type="audio/mp3" width="500" height="200">
    </audio>
    <video controls>
        <source src="./source/flower.webm">
        <source src="./source/flower.mp4">
        <embed src="./source/flower.mp4" type="video/mp4" width="500" height="200">
    </video>
    <iframe frameborder="0" src="https://v.qq.com/txp/iframe/player.html?vid=m00253deqqo" width="500" height="300" allowFullScreen="true"></iframe>
</body>
</html>